【4 Sides Strong Magnetic】The digital angle gauge has strong magnets on four sides that makes various stick-on measurements simple and accurate. This digital angle finder magnetic can be used in applications such as woodworking, home maintenance, operation, and decoration needs. The zero button can effectively realize absolute or relative measurement.<br>【Backlight LCD Display】The digital inclinometer with a 1.5-inch backlight LCD display can provide you immediate, clear, and accurate measurements in any lighting conditions. And the display will be inverted automatically when the angle finder tool is upside down.<br>【Two-Sided Laser Line】The built-in red laser lines(Class II, Output&lt;5mW) of the digital level on both sides are effective and convenient to carry out the horizontal and symmetrical work of home decoration. Three buttons can activate the red laser line, switch the unit of the measured value, hold the measured value, and zeroing function to realize relative measurement.<br>【Rechargeable】The protractor is rechargeable. It has an extremely long standby time. The battery level on the screen makes it easy to charge in time. And this digital level will automatically turn off after 3 minutes of no operation to save battery.<br>【Notice】If the digital angle finder is in an incorrect position (over 30 degree), display will tell ERROR. So we need to make sure that the angle gauge is used in a correct position.